NM_000504.4:c.77T>C

Variant names:

• chr13-113129458-T-C
• rs2036405117
• NM_000504.4:c.77T>C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000504.4(F10):​c.77T>C​(p.Ile26Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,522 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: F10 NM_000504.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.77

Genes affected

F10 (HGNC:3528): (coagulation factor X) This gene encodes the vitamin K-dependent coagulation factor X of the blood coagulation cascade. This factor undergoes multiple processing steps before its preproprotein is converted to a mature two-chain form by the excision of the tripeptide RKR. Two chains of the factor are held together by 1 or more disulfide bonds; the light chain contains 2 EGF-like domains, while the heavy chain contains the catalytic domain which is structurally homologous to those of the other hemostatic serine proteases. The mature factor is activated by the cleavage of the activation peptide by factor IXa (in the intrisic pathway), or by factor VIIa (in the extrinsic pathway). The activated factor then converts prothrombin to thrombin in the presence of factor Va, Ca+2, and phospholipid during blood clotting. Mutations of this gene result in factor X deficiency, a hemorrhagic condition of variable severity. Alternative splicing results in multiple transcript variants encoding different isoforms that may undergo similar proteolytic processing to generate mature polypeptides. [provided by RefSeq, Aug 2015]

F10-AS1 (HGNC:40225): (F10 antisense RNA 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.19416595).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
F10	NM_000504.4	c.77T>C	p.Ile26Thr	missense_variant	Exon 2 of 8	ENST00000375559.8	NP_000495.1
F10	NM_001312674.2	c.77T>C	p.Ile26Thr	missense_variant	Exon 2 of 7		NP_001299603.1
F10	NM_001312675.2	c.77T>C	p.Ile26Thr	missense_variant	Exon 2 of 8		NP_001299604.1
F10-AS1	NR_126424.1	n.41+548A>G		intron_variant	Intron 1 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
F10	ENST00000375559.8	c.77T>C	p.Ile26Thr	missense_variant	Exon 2 of 8	1	NM_000504.4	ENSP00000364709.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461522 Hom.: 0 Cov.: 33 AF XY: 0.00000275 AC XY: 2 AN XY: 727054

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000671

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

May 05, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.77T>C (p.I26T) alteration is located in exon 2 (coding exon 2) of the F10 gene. This alteration results from a T to C substitution at nucleotide position 77, causing the isoleucine (I) at amino acid position 26 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.25
BayesDel_addAF	Uncertain	0.042	T
BayesDel_noAF	Benign	-0.18
CADD	Benign	16
DANN	Benign	0.94
DEOGEN2	Benign	0.13	T;.;D
Eigen	Benign	-0.58
Eigen_PC	Benign	-0.63
FATHMM_MKL	Benign	0.37	N
LIST_S2	Benign	0.21	T;T;T
M_CAP	Benign	0.048	D
MetaRNN	Benign	0.19	T;T;T
MetaSVM	Uncertain	0.21	D
MutationAssessor	Benign	1.1	.;.;L
PrimateAI	Uncertain	0.51	T
PROVEAN	Uncertain	-3.0	D;D;D
REVEL	Benign	0.27
Sift	Benign	0.034	D;D;D
Sift4G	Uncertain	0.0050	D;D;D
Polyphen		0.085	B;B;B
Vest4		0.15
MutPred		0.59		Loss of stability (P = 0.0051);Loss of stability (P = 0.0051);Loss of stability (P = 0.0051);
MVP		0.96
MPC		0.65
ClinPred		0.22	T
GERP RS		3.4
Varity_R		0.12
gMVP		0.76

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs2036405117; hg19: chr13-113783772;